Are server names hardcoded in JDE

We were planning to rename our JDE Database Server but our CNC told that it is not advisable to rename as the server names are hard-coded in JDE and should be retained. Are the server names hardcoded in JDE?
If so where are they hardcoded. Do we have any oracle document which states machine names are hardcoded?.
Any help on this would be greatly appreciated..........


Thanks,
Karna